Computational Thinking – TheWorksheets.CoM – Page 2

Computational Thinking Exercise 5 (Cryptography) - ETH Z

Computational Thinking Exercise 5 (Cryptography) 1 Nonce Reuse In the ElGamal digital signature scheme, why should the same random nonce never be reused for 2 different messages with the same public/secret keypair? 2 Cryptographic Hash Functions Let h 1,h 2: {0,1}∗ →−{0,1}n be two collision resistant functions. Are the following hash ...